function submitForm(){
		if(document.getElementById('user_id').value==""){

				alert('请选择用户名！');

				document.getElementById('user_id').focus();

				return false;

			}
		if(document.getElementById('new_passwd').value==""){

				alert('请输入新密码！');

				document.getElementById('new_passwd').focus();

				return false;

			}
		if(document.getElementById('confirm_password').value==""){

				alert('请输入确认密码！');

				document.getElementById('confirm_password').focus();

				return false;

			}			
		if(document.getElementById('confirm_password').value !=document.getElementById('new_passwd').value){

				alert('两次输入密码不一致，请重新输入！');

				document.getElementById('new_passwd').focus();

				return false;

			}					
			document.addForm.submit();
}